User blog comment:PokeFreak117/HEEEELP!!/@comment-30040946-20180419010147/@comment-32358261-20180419072408

Well technically speaking those fan games aren’t allowed either. I would say that PBB has enough similarities to the source material that would make it considered copyright infringement.

I mean here are the things PBB has copied from the core games

1. Mechanics. Everything from stats to catching Pokémon to encountering wild Pokémon it’s the same

2. Formula. Bar gen 7 all core games follow the same simple formula. Leave home and start Pokémon journey. Beat the 8 gyms and battle the league and become the champion. Not to mention and evil team.

3. The 3d models. All models come from both gen 6 and 7. Probably the smallest thing. Overall using them is fine but those other two things are very big.

Just look at what happened to uranium a few years back. While it did have it’s fair share of differences it was shit down pretty swiftly after being released.